Change default value of 'pathParamsAsVariables' config option

[gcatanese]

Path parameters are often modified by developers using the collection (ie to test different scenarios), therefore creating those path parameters as Postman (global) variables does not make much sense.

This PR changes the default value of the configuration pathParamsAsVariables to skip (by default) the path parameters. Developers can still decide to enable this behavior setting the property to true.

PR checklist

• Read the contribution guidelines.
• Pull Request title clearly describes the work in the pull request and Pull Request description provides details about how to validate the work. Missing information here may result in delayed response from the community.
• Run the following to build the project and update samples:

  ./mvnw clean package 
  ./bin/generate-samples.sh
  ./bin/utils/export_docs_generators.sh
  

  Commit all changed files.
  This is important, as CI jobs will verify all generator outputs of your HEAD commit as it would merge with master.
  These must match the expectations made by your contribution.
  You may regenerate an individual generator by passing the relevant config(s) as an argument to the script, for example ./bin/generate-samples.sh bin/configs/java*.
  For Windows users, please run the script in Git BASH.
• In case you are adding a new generator, run the following additional script :

  ./bin/utils/ensure-up-to-date
  

  Commit all changed files.
• File the PR against the correct branch: master (6.3.0) (minor release - breaking changes with fallbacks), 7.0.x (breaking changes without fallbacks)
• If your PR is targeting a particular programming language, @mention the technical committee members, so they are more likely to review the pull request.

@gcatanese @wing328

[wing328]

Thanks for the PR. We'll include it in the upcoming v71.0 as it's a breaking change with fallback.

[wing328]

@gcatanese can you please PM via Slack when you've time?